issues with wx.lib.masked.TimeCtrl

[Paul Wiseman]

I noticed a bit of odd behaviour when upgrading to wxPython 3.0.1.1 with
the wx.lib.masked.TimeCtrl control.

Namely 3 things,

- Using colon / tab to change the selection did weird things - to recreate
type '11:' in the timectrl __name__ == '__main__' demo then begin typing
again (1 for example).
- Clicking or moving the cursor to a different field, then incrementing
with the spin control or arrow keys increments where the cursor used to be,
not where it currently is.
- 24hr format was always being used for me, despite passing False to the
constructor.

I took a look at the issues and created patches for the 3 bugs and
submitted a ticket on wxwidgets here: http://trac.wxwidgets.org/ticket/16578

Hope the changes are ok :)

Paul